William Fremantle

William Fremantle may refer to:

• William Fremantle (politician) (1766–1850), British courtier and politician
• William Fremantle (Dean of Ripon, died 1895) (1807–1895), Anglican priest and Dean of Ripon
• William Fremantle (Dean of Ripon, died 1916) (1831–1916), Anglican priest and Dean of Ripon